Description
Central Processing Unit (CPU) is a large scale integrated circuit, is a computer computing Core (Core) and Control Unit (Control Unit). Its main function is to interpret computer instructions and process data in computer software. The central processing Unit (CPU) mainly consists of ArithmeTIc (arithmetic Logic unit, ALU, ArithmeTIc Logic Unit) and Cache (Cache) and the Data, control, and state Bus (Bus) connecting them. It, together with internal Memory (Memory) and input/output (I/O) devices, is called the three core components of electronic computers. Logical unit of the CPU More detailed, from the perspective of the functions achieved, the CPU can be roughly divided into the following eight logical units: Instruction cache, commonly known as instruction register: it is the instruction warehouse on the chip, with which the CPU does not have to stop to find the instructions in the computer memory, thus greatly improving the CPU's computing speed. The decoding unit, commonly known as the instruction decoder: It is responsible for interpreting complex machine language instructions into a simple format that can be understood by the operational logic Unit (ALU) and registers, like a diplomat. Control unit: Since instructions can be stored in the CPU, and there are corresponding instructions to complete the preparation work before the operation, there is naturally a role to play a driving role behind it - it is responsible for the entire process of the operation controller. Based on instructions from the decoding unit, it generates control signals that tell the ALU and registers how to operate, what to operate on, and what to do with the results.
Register: It is very important for the CPU, in addition to storing some instructions of the program, it is also responsible for storing pointer jump information and cyclic operation commands, is a small storage area of data used by the arithmetic logic unit (ALU) to complete the task requested by the control unit, and its data source can be cache, memory, and any of the control units.
Logical operation Unit (ALU) : It is the intelligent part of the CPU chip, which can execute various commands such as addition, subtraction, multiplication, and division. In addition, it knows how to read logical commands such as or, and, and not. The message from the control unit will tell the arithmetic logic unit what to do, and then the arithmetic unit will intermittently or continuously extract data from the register to complete the final task.
Prefetch unit: The CPU performance depends on it very obviously, and the prefetch hit rate is directly related to the CPU core utilization rate, which leads to the difference in instruction execution speed. Depending on the requirements of the command or the task to be executed, the prefetch unit may obtain data and instructions from the instruction cache or computer memory at any time. When the instructions arrive, the most important task of the prefetch unit is to ensure that all the instructions are arranged correctly and then sent to the decoding unit.
Bus unit: It is like a highway to quickly complete the exchange of data between the units, and is also where data flows from memory to and from the CPU.
Data cache: Stores specially labeled data from the decoding unit for use by the logical unit, while also preparing the final results for distribution to different parts of the computer.
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The company focuses on DCS, PLC, robot, large servo four systems
The main products are various modules/cards, controllers, touch screens, servo drivers
Company advantage: Supply imported original products, professional production of spare parts
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